how to commit in merge console in git code example

Example 1: Please enter a commit message

To edit or add a commit message when git is using your default editor:
For Vi or Vim
1. Press "i" (for insert mode)
2. Write your message
3. Press esc (escape insert mode)
4. Press ":wq" (write & quit)
5. Press enter

Example 2: git merge

$ git checkout master
Switched to branch 'master'
$ git merge iss53